/**
 * The MIT License
 * 
 * Copyright (c) 2008, 2009 @Author(s)
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package com.googlecode.bdoc.diff.domain;

import java.util.List;

import com.googlecode.bdoc.doc.domain.ClassBehaviour;
import com.googlecode.bdoc.doc.domain.Package;
import com.googlecode.bdoc.doc.domain.UserStory;

/**
 * @author Per Otto Bergum Christensen
 */
public class DiffFactory<U> {

	public static Diff create(Object oldItem, Object newItem) {

		if (oldItem instanceof UserStory) {
			return new UserStoryDiff((UserStory) oldItem, (UserStory) newItem);
		}

		if (oldItem instanceof Package) {
			return new PackageDiff((Package) oldItem, (Package) newItem);
		}

		if (oldItem instanceof ClassBehaviour) {
			return new ClassBehaviourDiff((ClassBehaviour) oldItem, (ClassBehaviour) newItem);
		}

		throw new IllegalArgumentException("Can't create diff for <" + oldItem.getClass().getName() + ">");
	}

	public static <T, E extends Diff> ListDiff<T, E> create(List<T> oldVersions, List<T> newVersions) {
		return new ListDiff<T, E>(oldVersions, newVersions);
	}
}
